Typewriting machine



March 30,1926. 1,578,292

J. A EL SRAFTFI TYPEWRITING MACHI NE Original F l ar h 9. 1925 Patented Mar. 30,1926.

? UNITED: TATES "warren COMPANY, on YORK, N. 'Y., A CORPORATION OF DELAWARE.

TYP WRITING MACHINE.

. Application filed Mar h 9, 1923, .Serial No. 623,824. Renewed May 1, 1925.

projecting outwardly from the cylindrical surface ofthe platen at one side of the typing zone for the stencil-cards, and the feedrolls are cast off by means of shaft above and to the rear of the platen and a finger-piece on said shaft adjacent the initial card-inserting position of: the platen-rotating handle, so that, when a card is inserted between the platen and the cast-off feedrolls, the feed-rolls may be restored and the platen rotated by one hand of the typist,

only a slightmovement of the handbeing necessary to shift it from the cast-off finger wood standard typewriting machine as is The present invention relates to means for piece to the platenrotating handle'.'

increasing the speed of-operation by automatically controlling the feed-roll east-off means, and to means for improving the operation in other respects.

, According to the present embodiment of the invention, the shaft by which the feedrolls are cast off is provided with an arm having an open-ended slot into which pro jects a pin'on the platenrr'otati'ng handle when the platen is in its initial position for card-insertion. The platen-rotating handle is also mounted upon the platen so as to have lost motion thereon, and, upon movement of theplaten-rotating handle from its rearrnost position through the range of its lostmotion, the cast-off shaft will be rotated to restore the feed-rolls, and, upon further actuation of the platen-rotating handle, the pin will be w'ithdrawn from the slot and'the platen rotated to insert the -card.'- Upon with drawal of the card'and restoration of the platen to its initial position, the pin will be brought into the mouth of the open-ended slot and further rearward movement of the platen-rotating handle will actuate the feed- T oenable the typing on the stencil-cards.

PATENT" oerce. v

, JESSE A. B. SMITH, on STAMFORD, CONNECTICUT, Assr'euvon To UNDnRwooD were.

to be seen more readily,.provision may be. I

made of a black stencil-card backing of suit-".1

able material, such as celluloid. The stencil cards are usually moistened preparatory to typing, andvit is found that typing on the stencil-cards is seen-more readily when a black backing is used than whenthe :usual white backing'is used.

The stenc1l-cards are sometimes warpec so that their bottom edges bow outwardly from the platen and have a tendency to catch on' a type-bar-guide. To overcome this difliculty, provision may be made of suitable means, such as a wire card-guide arched over the type-bar guide' 'and supported by inserting its ends" into holes in a type-bar-segment. 'The card-guide may be flared forwardly above'thetype-bar-guide, so as to direct the lower edge of the downwardly-inserted stencil-card between the type-bar-guiole and the platen.- Other featuresand advantages will hereinafter appear.

Inthe accompanying drawings,

invention applied to so much'of an Undernecessary for the purpose of illustration. 7

Figure 2 is a sectional side elevation, show ing the feed-rolls cast off, and a stencil-card in gaged position. I

80. Figure 1 is a front elevation, showing the Figure 3 .is a v ew similar to Figure 2,

but with the platen-rotating handle swung forwardly sufficiently to restore the f-'eed-' rolls, preparatoryto rotating the platen.

"Figure 4 is'a perspective view of 'afblacl: backing-stripifor use on the platen.

F igure5 is a view similarto-Figure 3, but

with a stencil-card partly inserted. I v I t Figure 5,

-Fignre 6'is a ;view similar to but showing the stencil-card completely inserted to-receive typing.

Figure 7 is 'a fragmentary sectional view,

showing the backing-strip secured to the platen. Z p

A platen or platen-core 11 is supported by means of a platen-axle 12, journaled in the ends 13 of a platen-frame 14, comprisinga rear paper-table 15, a rod 16, upon which paper-fingers (not shown) are usually mounted,and a rod 17 connecting the ends 13 beneath the platen. 1 Inasmuch as the machine is particularly intended for typingor cutting stencil-cards 1.8, only the centralj'portion of. the platencore 11 is covered by an envelope 19 of suit able material, such as rubber, and serrated bands or rings 20 are secured to the platen- 7, core 11 at each side of the envelope'19' in position to engage the edges of. a stencil-card 18. To hold the stencil-card 18 in suitable engagement with the serrated bands 20, provision is nadejof feed-rolls '21: mounted on, the forward ends of let ers 22, pivoted by means of screws 23 .onplates or arms 24 mounted at the rear of the platen on a rod 25,secured on the ends 13 ofthe platen-s frame by screws 26and on a rod 16 on which 'paperefingers are usually mounted.

Adjustment of the plates 24 may .beob} tained by ni'eans of members 27 encircling V cation.

the rod-'16 adjacent: the plates 724 and secured thereto by means of screws 28.='/To obtain such adjustment, the plates 24 fit loosely onthe rod 16and-the screws'28 fit loosely in openings in the members 2?, so as to permit the plates 24 to be shifted relatively to the members 2'? and secured thereto by the screws 28. v v.

Theiarms ofthe levers 22 at the rear of the screws 23 extend rearwardly and downwardly, and are provided at-their rear. ends with :pins 29, to be ccntrollednby cams'30 onashaft 31, journa'le d in theplates 24. 'Eachof the earns 30comprise's an incline 32, and adepression 33 :at the-forward end of the incline. lVhenthe cams are in'the pos trons shown 1n F1gure 2, the feed-rolls are cast ofi, and, when the came 30 are in the position shownin Figure 3, the feed-rolls are 'oermitted to be aressed a 'ainst the bands 20 by means of springs 34 engaging pins 35 on the levers 22, and adj ustably connected with'plates 24 by" means of vdevices 36, disclosed more .fullyin said co-pending appli- Atthe front or delivery side of the platen,

the card 18 is guided to the platen by sidearound a shaft 43, supported in brackets 44,

projecting downwardly from the rod 17.

It is customary to wet the stencil-cards before typing, since better results are obtained under such conditions. According tothe present invention, use is madeof a black. backing-strip 45, of suitable material for stencil typing, such as celluloid, the backingstripbeing secured .in position by retaining plates '46 and 47, secured, to the platen by nsvaeee screws 48, as shown in Figure 7. It has been found that, especially in connection with wet stencil-cards, the black celluloid enables the typing to be read more easily.

j The platen is'rotated for card-insertionby means ofa handle 49, projecting from the cylindrical surface of the platen, and, after the insertion of a card, the platen 11 may be line-spaced by'm'eans ofa; finger-wheel 50 on one end of the platen-axle 12, or by line-spacing mechanism including a ratchet-1 Wheel 51, fixed on the platen-axle 12, an actuating pawl 52, and a pawl-carrying slide 7. 53, mounted on one end 13 o'f the platen+ frame. 7

7 In said co-pending application, theiplaten rotating handle is fixed directly on the: platen, but, according to the present in;

vention, the platen-rotating handle. 49 is mounted to swing about a 131170 054 011 an upright flange or plate 55 ofabracket'56,

secured to the platen by means of screws 57. The movement ofthe handle 49 with reference to the flange 55.i's limitedby pins 58 projecting from the flange 55 on 'opposite: sides of. the handle 49; Suchprovision of'lo'st motion for the handle 49 relativeto the flange 55 is utilized to cast otl'and restore the feed-rolls 21 while theplaten issin its initial card-insertingposition, determined by a fixed pin 59 in engagement with oneend of a slot 60 inacap 61 securedtothe right-hand end of the platen 11. The pin 59 is shown, in Figure 2, in engagement with one end of-the slot 60 to determine the init1al card-inserting position, and-in engage ment with the other end of the slot, in

Figure 6, to determine the limit of the-card:

inserting movement of the platen 11. I

The automatic control of the feed-rolls21 is eifected by meansof a pin 62, projecting from the side of the handle 49, and an arm 63, fixed on the shaft 31 and provided with a slot 64 to receive the pin 62. The sides of "thefwslot 64 are substantially parallel throughout the greaterpart of their length, but, at the outer end of the. slot, the upper side of the slot is provided with, an out wardly-inclined portion 65, and the opp e site side of the slotis,providedwith a.1 1-'inclined portion 66, to facilitate'movement of the pin 62 into and out of the slot 64.

When the parts are positioned as'shown in Figure 2, a stencil-card 18 may be inserted through the guides 38 and ,ga-ged by a ledge or gage 67, projectingoutwardly from the upper edge of the retaining plate 47 for the backing-strip. Movement of the handle 49, from its Figure 2 position? to its Figure 3 position, will produce no effect on the platen .11, but will serve, by meansof thepin 62, to rotate the shaft31.sufficiently ,to permit the rolls 21 to respond to the action of the springs. 34, and grip the sten-v oil-card 18 against the serrated bands 20,,

Further movement of the handle 49 in the same direction willserve to. advance the platen and card as indicated in Figure 5, the platen finally being checked by means of the pin 59 engaging the other end of the slot 60, as shown in Figure 6. The card 18 will then be in position for typing thereon by means of types 68 on type-bars 69.

After typing the first line on the stencil card, the platen may be line-spaced, as previously described, and, upon the completion of the typing on the card, the card may be grasped by the typist and drawn out of the machine, and the platen 11 may be restoredto its Figure 2 position. In the movement of the platen from its Figure 6 position to it's Figure 3 position, the pin 62 will be brought into the outer end otthe slot 64, and, upon shifting the handle 49 rearwardly to' its Figure 2 position, the feedrolls 21 will be cast off, It will be evident that, if the handle 49 be swung upwardly and rearwardly from its Figure 6 position,v it will engage the upper pin 58 and turn the platen to its Figure 2 position, the pin 62 entering the slot, 64, as the handle approaches its Figure 2 position and turning the shaft 31 to cast oflthe feed-rolls 21.

The stencil-cards are sometimes warped, so that the bottom edges bow outwardly from the platen and tend to catch on a type-bar-guide 70, mounted on a type-barsegment 71. To prevent such interference, provision is made of a wire card-guide 72,

looped over the type-bar-guide and sup-. ported by having its ends set into holes 1n the type-bar-s-egment 71. As shown in Figure 2,-the card-guide is flared outwardly above the type-bar-guide 70 so as to guide the lower edge of an inserted stencil-card back of the type-bar-guide. r Variations may be resorted to within the scope of the invention, and'portions of the improvements may be used without others. Having thus described my invention, I claim: I e 1 1. In a typewriting machine, a platen,

" means to rotate the laten means to redetermine the position to which the platen is rotated, feed-rolls to runon the platen, and feed-roll cast-off means rendered effective at the conclusion of the rotation of the platen to said predetermined position by said rotating means. 7

2. In a typewrit'ng machine, a platen, means to predetermine the extent of rot-a tion of the platen in line-feeding direction, feed-rolls running on the platen during the line-feeding operation, and feed-roll cast-off means rendered effective at the conclusion of the rotation of the platenin a-line-feeding direction to said predetermined'position.

3. In a typewriting machine, a platen, means to rotate the platen, means to predetermine the position to which the platen isrotated, feeddolls to run on the platen, and feed-roll cast-oh? means opera-tedjby; said platen-rotating means and rendered effective at the conclusion of the rotation of the platen-in line-feeding directionto said predetermined position, said cast-oh means being rendered ineffective at .the backward rotation of the platen by said rotating means. 7

4:. In a typewriting machine, a platen,

feed-rolls to run-on the platen, feed-roll cast-off means, a stop therefor, means for rotating the platen, and means-.actuabl'e by the platen-rotating means for automatically controlling the cast-off means as the platen.

moves to and leaves said stop. 1

5, In a typewriting machine, a platen, feed-rollsv to run on the platen, feed-roll cast-off means, a handle movable in one direction to rotate theplaten to insert aworksheet downwardly at the front of the platen, and in the opposite direction to rotate the platen to its initial position preparatory to the insertion of a new sheet, and means ope'rable by said handle during the latter part of its movement to position for. inserting" a work-sheet, to cast off the feed-rolls to, permit the lower edge of the work-sheet to? be inserted between the feed-rolls M and the platen, and, during the first part of its inserting movement, to throw on the feed-rolls so as to draw the work-sheet downwardly into the machine. I

6. In a typewriting machine, a platen, feed rolls to run on the "platen, feed-roll cast-off means, a handle movable in one direction to rotate the platen to insert a work-sheet downwardly at the frontot the platen, and in the opposite direction to rotate the platen to its initial position preparatory to the insertion" of a new sheet, means operable by said hande during-the latter part of its movement to position for insertinga work-sheet, to cast ofi the feedrolls to permit the lower edge of the worksheet'to be inserted between the feed-rolls and the platen, and, during the first part of its inserting movement, to throw on the- 8. In a typewriting machine, a platen,

feed rolls to run on the platen, feed-roll cast-ofi' means, and a platen-rotating handle the front of the plat-enQ v V 11'. In a machine for typing cards in rapid &

mounted on'the platen for independent movement to cast rolls.

rolls to run on'the platen, feed-roll'cast-oit means on said platen-frame, and'a'platenrotating handle on said platen, connectible',

by movement ofthe platen to one of its limit-1ngpositions,to the oastolimeans to controt the same.

10. In a typewriting" machine,- a platen,

means to limit the-increment of the platen in opposite directions, teed-rolls torun on the front of the plat-en,-' feed-roll cast-cit means, and a platen-rotating handle on said platen, having means to engage and actuate said cast-oil? means as it approaches its limit o't' movement in sivingin-gzthe front of the platen upwardly and'rearvvardly, and to re lease-the cast-oil means in the beginningof its movement to msert acard downwardly at succession, a revoluble platen, means to limit the irnoven'ient of the platen in accordance type-d, teed-rolls to press'the edges oft-he cardsagainst the platen, feed roll cast-oil means, a platen-actuating handlepii'oted on V the platen at one'side 'ot the ard-typing 'zone, stops for limiting the movement of said handle relative to the platen but permitting lost motion, and feed-roll cast-off means comprising a member to'be engaged by said handle When the platen'is' turned to card-inserting position, and actuable by the handle in its lost-motion movement to cast ofi. the teed-rolls for the insertion of the lower edge of a card between, the rolls and the platen, and releasable by the lost-motion movement'of the platen-actuating handle in the opposite direction preparatory toqcompletely inserting the card by continued move m cntof the handle. 5

l2. In a typewriting machine constructed for rapid insertion and Withd'rawal of 'Work atthe front of the 'machine, a" revoluble platen, a platen-actuating; handle movable in a; plane perpendicular to the axis o f'the laten, means for limiting the movement of the handle relative to the platen but providing for lost motion, feed-rolls to run on the platen, and :teed-roll'castbff means including a shaft above and to the rear of the platen and anarm'fixed on. the shaft and having an open slot and a-pin on said handle to enter said slot when the platen is turned to its limiting posltion in a line-feed with the requirements or the'cards to be direction, so that the lha-nd l'er when moved to its TQllllllUSC-il sl tlcil' ivlll'Cast off the feed rolls, and When-moved forwardly through? the range of its lost motion Will efiectrejstoration of the feeo-rolls-to effective position: Without shifting the platen. 7

13. In a typcivritingmachine, a revolubl'e platen, means tot-limit the movement of the,

platen in both directio'ns a plateprojecting from the platen su'b'sta ntially'in a plane per saidhandle and a oivotall -mounted meml .7

her having a slot to receive said pm when the platen'is moved substantially to its initial' position,- said member being movable to cast'off the feed-rolls by movement of the plateneotuating handlet'o its extreme rear posit-ion, and being movable to restore the i'eel rolls to ellective positionupon 'mo\' e meniof the'platen-actuadcin-gv handle into en 'agement" with the forward stop preparatory to rotating the platenby thevcontinuedi 'o rwaro movement of the handle 14. In a -typewriting machine, platen,.ahandle for turning the platen to insert "'a.

vorl -sheet downwardly at the front of the machine and in the opposite direction tOi eject-"the Work-sheet, a feed-roll to press the Work-sheet against the platen, and means acta'able by said handle for casting-off. the feed-rollto permitthe Work-sheetto be po-' sitioned for insertion by the platen, and for; thro' ding on the feed-roll upon movement ofth'e handle'gto rotate the platen in the directioirto insert the Work-sheet.

15. in a typewriting machine, the-combination of a platen, teed-rolls to run on said platen, a bracket secured,directly'to-Qsaid platen, and a {finger-piece pivoted on said bracket to release said feecl i'olls'.

- 18; In a typewriting machine, the cO mbi nation of a platen,-:teed-rolls to runon said platen, a bracket secured directly to said" platen, a finger-piece pivoted'on saidbracket to release said feed-rolls, and stops on said bracket to limit the movement of said fingerpiece about its pivot, said finger-piece after it meets the stops being effective to rotate the platen to feed-a Work-piece.

JESSE 11B. SMITH. 

